'''
Author: Tom Bombadil
Date: 12/01/2015
Version 1.5
14/4/2015 changed parameter names from a,b to x,y - Bob Newhart

Usage: This function returns the sum
of two values passed to the function
'''
def my_function(x, y):
   #add x to y
   z = x + y
   #return the result of x + y
   return z